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Chemical Equilibrium Equilibrium Constant Kc

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For A + B ⇌ C + D, initially [A] = [B] = 1.0 mol dm⁻³ and [C] = [D] = 0. At equilibrium, [C] = [D] = 0.8 mol dm⁻³. The value of Kc is:

Verified Answer & Explanation⌄

Correct Answer: D) 16

Concept Explanation

[A] = [B] = 0.2 mol dm⁻³, so Kc = (0.8 × 0.8)/(0.2 × 0.2) = 16.

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